Rex vs Jefferson

Baby Name Comparison — 2026

Rex

Boy #793 Most Popular 1 Syllable

"king"

Origin: Latin

English Latin American

✓ All Clear

Boy #711 Most Popular 3 Syllables

"son of Jeffrey, son of God's peace"

Origin: Old English via Germanic

American English

✓ All Clear

Rex Rank #793

Jefferson Rank #711

Jefferson is more popular, ranked #711 vs #793 for Rex.

Is Rex or Jefferson more popular?

Jefferson is more popular, ranked #711 compared to Rex at #793 in the United States.

What do Rex and Jefferson mean?

Rex means "king" (Latin origin). Jefferson means "son of Jeffrey, son of God's peace" (Old English via Germanic origin).

Are Rex and Jefferson boy or girl names?

Rex is primarily a boy name. Jefferson is primarily a boy name.